Citalopram vs Gefitinib

## Citalopram vs Gefitinib: Overview

This comparison examines the pharmacological differences between **Citalopram** and **Gefitinib**.

## Mechanism of Action

**Citalopram**: Selective serotonin reuptake inhibitor (SSRI); racemic mixture with escitalopram as active S-enantiomer.

**Gefitinib**: Selective reversible inhibitor of EGFR tyrosine kinase.

## Pharmacokinetics

**Half-life**: Citalopram — 35 hours; Gefitinib — 48 hours.

## Chemical Properties

**Molecular Formula**: Citalopram — C20H21FN2O; Gefitinib — C22H24ClFN4O3.

**Molecular Weight**: Citalopram — 324.3920 g/mol; Gefitinib — 446.9000 g/mol.

**Type**: Citalopram — Small molecule; Gefitinib — Small molecule.